Since you didn't italicize any word, I will just write every part of speech here.
Catching is a gerund/noun, fish is a noun, is is a verb, one is a number, of is a preposition, the is a determiner, oldest is an adjective, pastimes is noun.
Do you ever wonder why our sweeth tooth wants that particular sweet snack?
that should do it hope it helps ya bc its suppose to draw the readers attention if im thinking of the right thing
Answer: Peter but im not 100% sure
Explanation:
Kathy's brother will be so happy when he returns from summer camp tomorrow.
The likimg verb is When because is between the subject and the subjective complement.